2.0s here too. Nothing but good things to say about them. Don't notice them ever. I've worn them on 4 hour pedaling epics, days at the DH park and shuttling. They are not bulky and fit great under my riding pants. They could probably be worn under jeans without issue.

I just picked up a pair and I haven't had a chance to wear them with bare knees yet. I suggest a thin knee warmer. Also you can try the tops of a pair of long thin socks with the feet cut off. The pads will hold them up but they will hopefully stay tight against the knee. Good luck.

I have vpd 2.0 and have no issues with the front of my knee rubbed. The back of my knee is always my issue no matter which knee pads (with elastic straps above and below the knee). Only 300+ miles on them though, on rides lasting 8-30 miles (45 mins to 3.5 hours). I had Kyle Straits before these and they fit really loose in comparison, but comfortably. Their problem is that they don't absorb much of the impact. I had a nice wake-up call when I tried to huck a mere 2.5 ft drop to flat with speed and bounced/got squirrely on landing since I lost my footing on one of my pedals, and ended up falling over to the side with my knees and hands hitting the ground. Felt like the impact went straight through and got a nice bruise from that... at least it wasn't bloody and scraped.

My 2.0s have been great. Liking them more than my Fox Launch Pros and Leatt 3DF. Seem to curve around the side of the knee better for more protection than the other two. I did have some bad chafing on the back of my legs after some 15-20mi rides. Turns out it was the tags causing this. The left one has more tags and sure enough was causing more rubbing. Cut them all off and no problems.

I think I have the '12 model VPD2.0s or whatever, as the newer ones are longer but I also get chafing on the inside of my left calf muscle. The problem area is the inside bottom 'corner' of the hard portion - actually rubs off my skin. Only on the left leg though.

The tags were what was causing the bad chafing for me. The left one has an extra tag or two iirc so it was causing worse rubbing on the back of my left leg. I removed all the tags and problem solved. Maybe yours is rubbing you in a different area that is not caused by the tags though?